用 F_1代黄化幼苗匀浆液氧化活性系数预测杂种优势,虽然能够缩短育种年限,但仍需在田问制备 F_0代杂交种,费工、费时。于是我们又进一步探讨了用恢复系的氧化活性预测高粱杂种优势。一、试材:用锦州市农科所1981年正在选育的恢复系。有铁恢6×大青叶、锦恢75×白平、自平×锦恢75、锦恢6×矮_2、铁恢6×唐恢67、盘早×(小恢×红长粒)、锦恢6×白_(253)、白平×(早熟1号×7384)、库姆孜×八叶齐、盘早×矮308、怀来×唐恢10、晋5×57—1,都是杂交后繁殖6～7代性状稳定的恢复系。二、实验方法:与测 F_1代黄化幼苗匀浆液氧化活性系数相同。三、试验结果及分析由于瓦勃氏呼吸计的构造所限,每次只能做3～4个恢复系。而不同测试组别的恢复系 Predicting the heterosis by using the F 1 generation of yellowing seedlings homogenate oxidation activity coefficient, although it can shorten the breeding time, but still need to prepare F_0 generation hybrids in field, time-consuming and labor-intensive. Thus, we further explored the use of restorer oxidative activity to predict sorghum heterosis. First, the test material: with Jinzhou City Institute of Agriculture in 1981 is breeding Department. Tiexu 6 × Daqingye, Jinhui 75 × Baiping, Jin × × × × 75, Jinhui 6 × Dwarf _2, Tiehui 6 × Tang Hui 67, Panxiao × (Xiaohui × red long grain) , Jinhui 6 × white (253), Bai Ping × (precocious 1 × 7384), Qiumu × 8 leaves Qi, Pan early × short 308, Huailai × Tang Hui 10, Jin 5 × 57-1, Are all hybrid breeding 6 to 7 generations of stable traits. Second, the experimental method: measured with F_1 generation of yellow seedlings homogenate oxidation activity of the same. Third, the test results and analysis Due to the structure of the Walter’s respirometer limited to only 3 to 4 restorers. The recovery of different test groups